code: def test_anisou():
      """Test writing ANISOU entries."""
      ppdb = PandasPdb()
      ppdb.read_pdb(TESTDATA_FILENAME2)
      ppdb.to_pdb(path=OUTFILE, records=None)
      with open(OUTFILE, "r") as f:
          f1 = f.read()
      os.remove(OUTFILE)
      assert f1 == four_eiy
  
file_path: biopandas/biopandas/pdb/tests/test_write_pdb.py
imports: from biopandas.pdb import PandasPdb
  import warnings
  import pandas
  import os
label_desc: Use image node_id 4 for calling a global function with example usage: test_anisou() without return types